Connecter



P 1935. J. T. MARVIN I 2,013,732

CQNNECTER Filed June 10, 1933- John 71' [Yarn/n;

INVENTOR.

I M M ATTORNEY.

45 out necessarily turning the ferrule.v

Patented Sept. 10, 1935 UNITED STATES PATENT OFFICE CONNECTED John '1. Marvin, Cleveland, Ohio Application June 10, 1933, Serial No. 675,224

1 Claim.

or deforming the tubing to which it is applied or the component parts of the connecter. I

Other objects and advantages of the invention will be apparent in the following description and '15 accompanying drawing in which:

' Fig. 1 is a view partly in section, showing my improved coupling member, and

- Fig. 2 is a sectional view of the ferrule forming a part of the coupling.

20 In carrying out the inventionI provided a sleeve or coupler both? Iii-which is provided at its outer end with an external threaded portion l I for cooperating with the body (not shown) with which the tubing i2 is to communicate. Inwardly the 25 member I is provided with an angular seat l3 adjacent which the end I! of the tubing l2 ierminates. The enlarged end i5 of the member in is screw threaded internally, as indicated at I 6'for receiving the. screw threaded end I! of a coupling. 30 member II which surrounds the tubing. The

coupling member I8 is provided with a head M for receiving a wrench or other suitable means to permit its adjustment.

A ferrule 20, which may be made of relatively 35 soft and flexible, metal, extendslongitudinally through the coupling member land is provided at its inner end with a tapering triangular shaped portio 2|, having a shoulder 22 which receives the er end of the coupling member l8. The 40 outer end of the ferrule after being inserted through'the member i8 is swaged over as indicated at 23'to hold it in place. The member i8 and the ferrule -20 are rotatable relative to each other so that the coupling It may be turned with- V The coupling member 18 should be of a substantial length so as to provide a rigid support for the adjacent.

portion of the ferrule.

The body member I0 is provided internally 59 thereof with a curved portion 2| and. a straight ortion :5, which is Just slightly. larger than the of the tubing to be connected, and

(Cl. 285-166) The present invention relates to couplings or which straight portion extends from the curved portion 24 to the shoulder l3.

In assembling the coupling above described the coupling member l8 and its associated ferrule 20 v are slid over the end of the tubing l2, after which 5 the tubing is inserted in the body member III with its and resting against the shoulder I3 as indicat ed in Fig. 1. The coupling member i8 is then screwed into the body member l0, thereby tending to compress the wedge-shaped inner. end of the ferrule between the curved portion 24 of the' body member and the adjacent portion of the-tubing. When the member It has been screwed to its extreme innermost position a fluid-tight joint is formed by reason of this wedging action. The

uncoupling process is just the reverse of that described, and it will be apparent that after being uncoupled both the tubing and the coupling member l8 together with its associated ferrule may be {re-used, inasmuch as no damage has been caused to any of the parts by reason of the original coupling or uncoupling. i

It is apparent that I have provided a simple and effective coupling member or connecter which forms a gas-tightjoint and which may be re-used 25 as often'as desired, and that while I have shown and described a specific embodiment of the in-- vention, it is apparent that other forms might be adopted, all coming within the scope of the appended claim.

I claim: In combination. a tube connecter comprising a body having a screw threaded bore therein and a counterbore extending axially from the inner end thereof whereby a shoulder is formed, a tube to ,be received in said counterbore, a coupling member exteriorly screw threaded for threaded engagement with the screw threads of the bore, and

a ferrule rotatably mounted within the coupling member and closely embracing the tubing, said 40 coupling member substantially throughout the length thereof closely embracing the ferrule, said ferrule having a wedge-shaped head on the inner end thereof, the apex of the wedge being adapted to iniectbetween the body shoulder. and the tube, said head having a oulder adapted-to be engaged by the inner. nd of the coup i member whereby the end of the coupling member will force the wedge-shaped head between the body shoulder and the tubing when the coupling memher is drawn tight.

. com: '1'. MARVIN. 

